<template>
    <div style="position: relative;">
        <div v-if="type === '2'" class="verify-img-out"
             :style="{height: (parseInt(setSize.imgHeight) + vSpace) + 'px'}"
        >
            <div class="verify-img-panel" :style="{width: setSize.imgWidth,
                                                   height: setSize.imgHeight,}"
            >
                <img :src="'data:image/png;base64,'+backImgBase" alt="" style="width: 100%; height: 100%; display: block;">
                <div v-show="showRefresh" class="verify-refresh" @click="refresh">
                    <i class="iconfont icon-refresh" />
                </div>
                <transition name="tips">
                    <span v-if="tipWords" class="verify-tips" :class="passFlag ?'suc-bg':'err-bg'">{{ tipWords }}</span>
                </transition>
            </div>
        </div>
        <!-- 公共部分 -->
        <div class="verify-bar-area" :style="{width: setSize.imgWidth,
                                              height: barSize.height,
                                              'line-height':barSize.height}"
        >
            <span class="verify-msg" v-text="text" />
            <div class="verify-left-bar"
                 :style="{width: (leftBarWidth!==undefined)?leftBarWidth: barSize.height, height: barSize.height, 'border-color': leftBarBorderColor, transaction: transitionWidth}"
            >
                <span class="verify-msg" v-text="finishText" />
                <div class="verify-move-block"
                     :style="{width: barSize.height, height: barSize.height, 'background-color': moveBlockBackgroundColor, left: moveBlockLeft, transition: transitionLeft}"
                     @touchstart="start"
                     @mousedown="start"
                >
                    <i :class="['verify-icon iconfont', iconClass]"
                       :style="{color: iconColor}"
                    />
                    <div v-if="type === '2'" class="verify-sub-block"
                         :style="{'width':Math.floor(parseInt(setSize.imgWidth)*47/310)+ 'px',
                                  'height': setSize.imgHeight,
                                  'top':'-' + (parseInt(setSize.imgHeight) + vSpace) + 'px',
                                  'background-size': setSize.imgWidth + ' ' + setSize.imgHeight,
                         }"
                    >
                        <img :src="'data:image/png;base64,'+blockBackImgBase" alt="" style="width: 100%; height: 100%; display: block;">
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>
<script type="text/babel">
/**
     * VerifySlide
     * @description 滑块
     * */
import {aesEncrypt} from './../utils/ase'
import {resetSize} from './../utils/util'
import {reqGet, reqCheck}  from '../api/verifition-api'

//  "captchaType":"blockPuzzle",
export default {
    name: 'VerifySlide',
    props: {
        captchaType: {
            type: String
        },
        type: {
            type: String,
            default: '1'
        },
        // 弹出式pop，固定fixed
        mode: {
            type: String,
            default: 'fixed'
        },
        vSpace: {
            type: Number,
            default: 5
        },
        explain: {
            type: String,
            default: '向右滑动完成验证'
        },
        imgSize: {
            type: Object,
            default() {
                return {
                    width: '310px',
                    height: '155px'
                }
            }
        },
        blockSize: {
            type: Object,
            default() {
                return {
                    width: '50px',
                    height: '50px'
                }
            }
        },
        barSize: {
            type: Object,
            default() {
                return {
                    width: '310px',
                    height: '40px'
                }
            }
        }
    },
    data() {
        return {
            secretKey: '',        // 后端返回的加密秘钥 字段
            passFlag: '',         // 是否通过的标识
            backImgBase: '',      // 验证码背景图片
            blockBackImgBase: '', // 验证滑块的背景图片
            backToken: '',        // 后端返回的唯一token值
            startMoveTime: '',    // 移动开始的时间
            endMovetime: '',      // 移动结束的时间
            tipsBackColor: '',    // 提示词的背景颜色
            tipWords: '',
            text: '',
            finishText: '',
            setSize: {
                imgHeight: 0,
                imgWidth: 0,
                barHeight: 0,
                barWidth: 0
            },
            top: 0,
            left: 0,
            moveBlockLeft: undefined,
            leftBarWidth: undefined,
            // 移动中样式
            moveBlockBackgroundColor: undefined,
            leftBarBorderColor: '#ddd',
            iconColor: undefined,
            iconClass: 'icon-right',
            status: false,	    // 鼠标状态
            isEnd: false,		// 是够验证完成
            showRefresh: true,
            transitionLeft: '',
            transitionWidth: ''
        }
    },
    computed: {
        barArea() {
            return this.$el.querySelector('.verify-bar-area')
        },
        resetSize() {
            return resetSize
        }
    },
    watch: {
        // type变化则全面刷新
        type: {
            immediate: true,
            handler() {
                this.init()
            }
        }
    },
    mounted() {
        // 禁止拖拽
        this.$el.onselectstart = function() {
            return false
        }
    },
    methods: {
        init() {
            this.text = this.explain
            this.getPictrue()
            this.$nextTick(() => {
                let setSize = this.resetSize(this)	// 重新设置宽度高度
                for (let key in setSize) {
                    this.$set(this.setSize, key, setSize[key])
                }
                this.$parent.$emit('ready', this)
            })

            var _this = this

            window.removeEventListener('touchmove', function(e) {
                _this.move(e)
            })
            window.removeEventListener('mousemove', function(e) {
                _this.move(e)
            })

            // 鼠标松开
            window.removeEventListener('touchend', function() {
                _this.end()
            })
            window.removeEventListener('mouseup', function() {
                _this.end()
            })

            window.addEventListener('touchmove', function(e) {
                _this.move(e)
            })
            window.addEventListener('mousemove', function(e) {
                _this.move(e)
            })

            // 鼠标松开
            window.addEventListener('touchend', function() {
                _this.end()
            })
            window.addEventListener('mouseup', function() {
                _this.end()
            })
        },

        // 鼠标按下
        start: function(e) {
            e = e || window.event
            if (!e.touches) {  // 兼容PC端
                var x = e.clientX
            } else {           // 兼容移动端
                var x = e.touches[0].pageX
            }
            this.startLeft = Math.floor(x - this.barArea.getBoundingClientRect().left)
            this.startMoveTime = +new Date()    // 开始滑动的时间
            if (this.isEnd == false) {
                this.text = ''
                this.moveBlockBackgroundColor = '#337ab7'
                this.leftBarBorderColor = '#337AB7'
                this.iconColor = '#fff'
                e.stopPropagation()
                this.status = true
            }
        },
        // 鼠标移动
        move: function(e) {
            e = e || window.event
            if (this.status && this.isEnd == false) {
                if (!e.touches) {  // 兼容PC端
                    var x = e.clientX
                } else {           // 兼容移动端
                    var x = e.touches[0].pageX
                }
                var bar_area_left = this.barArea.getBoundingClientRect().left
                var move_block_left = x - bar_area_left // 小方块相对于父元素的left值
                if (move_block_left >= this.barArea.offsetWidth - parseInt(parseInt(this.blockSize.width) / 2) - 2) {
                    move_block_left = this.barArea.offsetWidth - parseInt(parseInt(this.blockSize.width) / 2) - 2
                }
                if (move_block_left <= 0) {
                    move_block_left = parseInt(parseInt(this.blockSize.width) / 2)
                }
                // 拖动后小方块的left值
                this.moveBlockLeft = (move_block_left - this.startLeft) + 'px'
                this.leftBarWidth = (move_block_left - this.startLeft) + 'px'
            }
        },

        // 鼠标松开
        end: function() {
            this.endMovetime = +new Date()
            var _this = this
            // 判断是否重合
            if (this.status && this.isEnd == false) {
                var moveLeftDistance = parseInt((this.moveBlockLeft || '').replace('px', ''))
                moveLeftDistance = moveLeftDistance * 310 / parseInt(this.setSize.imgWidth)
                let data = {
                    captchaType: this.captchaType,
                    'pointJson': this.secretKey ? aesEncrypt(JSON.stringify({x: moveLeftDistance, y: 5.0}), this.secretKey) : JSON.stringify({x: moveLeftDistance, y: 5.0}),
                    'token': this.backToken
                }
                reqCheck(data).then(res => {
                    if (res.repCode == '0000') {
                        this.moveBlockBackgroundColor = '#5cb85c'
                        this.leftBarBorderColor = '#5cb85c'
                        this.iconColor = '#fff'
                        this.iconClass = 'icon-check'
                        this.showRefresh = false
                        this.isEnd = true
                        if (this.mode == 'pop') {
                            setTimeout(() => {
                                this.$parent.clickShow = false
                                this.refresh()
                            }, 1500)
                        }
                        this.passFlag = true
                        this.tipWords = `${((this.endMovetime - this.startMoveTime) / 1000).toFixed(2)}s验证成功`
                        var captchaVerification = this.secretKey ? aesEncrypt(this.backToken + '---' + JSON.stringify({x: moveLeftDistance, y: 5.0}), this.secretKey) : this.backToken + '---' + JSON.stringify({x: moveLeftDistance, y: 5.0})
                        setTimeout(() => {
                            this.tipWords = ''
                            this.$parent.closeBox()
                            this.$parent.$emit('success', {captchaVerification})
                        }, 1000)
                    } else {
                        this.moveBlockBackgroundColor = '#d9534f'
                        this.leftBarBorderColor = '#d9534f'
                        this.iconColor = '#fff'
                        this.iconClass = 'icon-close'
                        this.passFlag = false
                        setTimeout(function() {
                            _this.refresh()
                        }, 1000)
                        this.$parent.$emit('error', this)
                        this.tipWords = '验证失败'
                        setTimeout(() => {
                            this.tipWords = ''
                        }, 1000)
                    }
                })
                this.status = false
            }
        },

        refresh: function() {
            this.showRefresh = true
            this.finishText = ''

            this.transitionLeft = 'left .3s'
            this.moveBlockLeft = 0

            this.leftBarWidth = undefined
            this.transitionWidth = 'width .3s'

            this.leftBarBorderColor = '#ddd'
            this.moveBlockBackgroundColor = '#fff'
            this.iconColor = '#000'
            this.iconClass = 'icon-right'
            this.isEnd = false

            this.getPictrue()
            setTimeout(() => {
                this.transitionWidth = ''
                this.transitionLeft = ''
                this.text = this.explain
            }, 300)
        },

        // 请求背景图片和验证图片
        getPictrue() {
            let data = {
                captchaType: this.captchaType
            }
            reqGet(data).then(res => {
                if (res.repCode == '0000') {
                    this.backImgBase = res.repData.originalImageBase64
                    this.blockBackImgBase = res.repData.jigsawImageBase64
                    this.backToken = res.repData.token
                    this.secretKey = res.repData.secretKey
                } else {
                    this.tipWords = res.repMsg
                }
            })
        }
    }
}
</script>

